Hose-coupling.



H. H. HEWITT & C. H. PAEPLOW, 1TB. HOSE OOUPLING.

APPLICATION FILED AUG.2I9, 1912.

Patented Mar. 2, 1915.

HERBERT H. HEWITT AND CHARLES H. PAEPLOW, JR., F BUFFALO, NEW YORK.

Specification of Letters Patent.

HOSEf-COUPLING.

Patenten-naif. a, luis.

Application led August 29, 1912. Serial No. 717,816.

To lall 'whom it may concern:

Be it known that we, HERBERT Il. HEW- ITT and CHARLES H. PAnrLow, Jr., citizens of the United States, and residents of the city of Buffalo, county of Erie, and State of New York, have invented certain new and useful Improvements in -Hose-Couplings, of

ing the sections of air brake hose to the coupling members and train pipe nipples.

n The invention consists in the features of novelty hereinafter described, illustrated in the accompanying drawing and particularly pointed out in the claims at the end of this specification.

In the drawings, Figure -1 is a view in .elevation of the improved coupling. Fig. -2

is a longitudinal section thereof on the line 2--2 of Fig. 1. Fig. 3 is a 'view partly in elevation and partly in longitudinal section of the main body or nipple portion of the improved coupling. Fig. 4 is an end View thereof. Fig. 5 is a View partly `Vin' elevation and partly in longitudinal section of the sleeve-member ofthe coupling. l

In the vaccompanying drawing, A designates a sectionof hose'that'may be used for connecting one of the coupling members of,

an air brake hose to a nipple of the train ',-pipe system. yIn the drawings we have shown our invention as applied to the nipple whereby the hose section A is connected with l, the train pipe,- but it will be understood that the invention vis equally applicable to the coupling members by which the sections of f hosewill be united together, or, indeed, may

be used in any situation in which a section ":of hose is to be connected to a rigid pipe or like part.

1 As shown, `the body of the nipple B is.

'i provided with the usual threaded portion b adapted to engage the train pipe, the-body I. of the nipple being preferably formed with a polygonal portion b to enable it to 'be conveniently turned by a wrench. From the body of the nipple B projects a reduced. shank C over which the end of the hose A will be drawn. At the inner end of the shank C the body Bof the nipple is formed with a shoulder b2, from which extends an inwardly turned .flange or projection b3 adapted to engage with a corresponding flange or offset d on the inner end of the sleeve D. Preferably, the flange or projection Vb" of the nipple is annular, and, preferably also the flange or offset d at the inner end of the sleeve D is annular, although such construction is not essential. l

In order to enable the flange or offset d of the sleeve D to engage Ithe flange or projection b3 of the nipple, the inner portion of the sleeve D is slotted, so that such portion of the sleeve may be contracted after the hose has been placed upon the shank and the sleeve D has been moved inwardto engage the body of thenipple, in manner to be presently described. Preferably, the slots in the innertportion of the sleeve D are formed, as shownin the drawingsthat is to say, there will be Ea `series 'of short slots d extending -lengthwise of the sleeve. The precise 'form yand arrangement of the slots, however, are

not essential. By preference the face of the Harige or offset l of the sleeve' D a-nd the face of the ,flange or olls'et b3 of the nipple B areA beveled .so as to enable theset parts 'to be more readily engaged one with the other.

As shown, the sleeve D is somewhat longer than the lshank C of the nipple and the free end of thesleeve is contracted slightly at a point just beyond the endof the shank, as at cl2, so that when the parts are-assembled and in position for'use the contracted portion of the sleeve will firmly hold the hose by compressing or squeezing it between the en d of the shank and the contracted portion of the sleeve, thereby preventing the hose from becoming detached from the shank of the coupling by being pulled or drawn off.

As ,shown also, the eXtreme free end of the t sleeve D is flared or, bell-shaped, in order that the hose may not become kinked in bending 'over the edge of the sleeve and may not be cut or injured at such point.

In assembling the parts, the sleeve D will rst be slipped over the hose A, the free'end of which will then be forced over the shank C of the nipple or part to which our invention l is applied. The sleeve D will then be pushedl toward the end of the hose and toward the nipple so as to encircle both the hose and the shank C. By means of a suitable clamp or tool. the inner slotted portion of the sleeve D will then be compressed and contracted so 'as to enable the flange or offset d to pass under the flange or projection bs of the nipple B, as the sleeve D is forced against the shoulder b2 of the nipple. As soon as the pressure of the clamp or tool is released, the flange or offset d of the sleeve D will spring outward j (by reason of of the invention,

the elasticity of the metal of Which the sleeve D is composed) until the flange or odset l enters the annular space between the flange or projection b3 and the shoulder b2 of the nipple. When th'e parts are in this position, the sleeve D will be firmly inter- ,locked with the body of the nipple. When the sleeveD is thus forced to position to interlock with the body of the nipple, the "contracted outer end of the sleeve D will mly compress the hose against the free end of the shank C and all danger of the hose pulling off or blowing oil is effectively guarded against. When the hose A is to be detached from the nipple B, this can be readily accomplished by contracting the inner portion of the sleeve D and moving the sleeve outwardly to disengage its shoulder or ofiset d fromthe ange or projecting part b3 of the body of the nipple.

Not only does our invention provide an exceedingly simple and effective means for gripping and holding the hose upon the shank of the nipple or other part to Which it is to be connected, but it also affords a most efficient means for protecting the end portion of the hose, so that the hose cannot be bruised or jammed against the shank of the nipple or other part on which it is' mounted.

We wish it distinctly understood that the details of construction above set out may be varied without departing from the spirit and that features of the invention may be employed without its 'adoption as an entirety.

aving thus described our invention, what we claim as new and desire to secure by Letters Patent, is i.

1. A hose coupling comprising a `metal `*body having a rigidshank adapted to enter thereon and having. a

the end of the, hose and an exterior shoulder at the inner end of the shank provided with an interlocking flange,` and a retaining sleeve encircling said shank with the hose coperating interlocking flange at its inner end, said sleeve 'longer than said shank being longer than said shank and provided with an annular contracted portion at its outer end, said sleeve having a sliding movement in a straight aXial direction to thereby interlock said flanges and compress the hose between said annular contracted portion and the outer end of said shank, substantially as described.

2. A hose coupling comprising a metal body having a rigid shank adapted to enter the end of the hose and an external cylindrical shoulder atfthe inner end of said shank provided with a laterally projecting, beveled interlocking flange, and a retaining sleeve encircling said shank with a hose thereon and having a longitudinally slotted inner end provided with an interlocking flange adapted to engage the flange of said shoulder, said sleeve being longer than said shank and provided with an annular contracted portion adjacent its outer end, and said sleeve having a sliding movement in said axial direction to thereby interlock said flanges and compress the hose between said annular contracted portion and the outer end of saidI shank, substantially as described.

3'. A hose coupling comprising a metal body having a substantially cylindrical, rigid shank provided with a convexly rounded outer end, said body having an exterior cylindrical shoulder at the inner end of said shank and provided with a laterally projecting, beveled interlocking flange, and a substantially cylindrical retaining sleeve adapted to encircle said shank with a hose thereon and having a slotted inner end provided with a beveled. interlocking flange adapted to coperate with the interlocking flange of said shoulder, said sleeve bemg and provided with an annular contracted portion adjacent its outer end and forming an internal rib having an inner, conveXly rounded surface,

Y said sleeve having a sliding movement in straight aXial direction to thereby interlock said 'flanges and compress the hose between said rib and the conveXly rounded outer end of said rigid shank, substantlally as described.

HERBERT H. HEWITT. CHARLES H. PAEPLOW, JR. Witnesses: 4

FRANKH. VAN DERBECK, PERCY P. TEAL. 

